The common-core math standards require that students learn the standard algorithm for multi-digit adding and subtracting—you know, the process in which you line the numbers up vertically to add or ...

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Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hello learners. My name's Miss White and I'm very excited to be teaching you today. For this lesson you ...

The Common Core method has many parents concerned. Complaints range from "it's too focused on understanding the steps instead of getting the right answer" to "it's too complicated, I can't even help ...